Mar 31, 2022 · If the implementation does not support floating-point infinities, the macro INFINITY expands to a positive value that is guaranteed to overflow a float at compile time, and the use …

Dec 31, 2011 · I have an int a that needs to be equal to "infinity". This means that if int b = anyValue; a>b is always true. Is there any feature of C++ that could make this possible?

Jul 23, 2025 · In C++, positive infinity is defined in many libraries but the negative infinity is not defined. In this article, we will learn how to define and use the negative infinity in C++.

Nov 2, 2022 · The positive or unsigned infinity value is defined in many libraries in C++, like cmath and limits, but there is no standard for defining the negative Infinity in C++.

If the implementation supports infinity values, this is defined as the value that represents a positive or unsigned infinity. Otherwise, it is a positive constant that overflows at translation …

Feb 21, 2023 · Returns the special value "positive infinity", as represented by the floating-point type T. Only meaningful if std::numeric_limits<T>::has_infinity == true. In IEEE 754, the most …

Oct 29, 2023 · Note that integers do not have reserved infinity (Inf), or not a number (NaN) and operations that result in a value out of int 's range will (still) overflow, as opposed to operations …

In C++, there is no built-in “inf” function. However, you can use “std::numeric_limits” from the standard math library to obtain the value for infinity.

Returns the special value "positive infinity", as represented by the floating-point type T. Only meaningful if std::numeric_limits <T>::has_infinity == true. In IEEE 754, the most common …

If the implementation supports floating-point infinities, the macro INFINITY expands to constant expression of type float which evaluates to positive or unsigned infinity.